scb 68 temperature sensor

[georgeofthejungle]

Hi All,

Is it possible to read the value of the internal temperature sensor of the SCB68?

I am using NI PXI-6259 card. I have set the SCB 68 switches to 'MIO with differential temperature sensor mode' and i think i should be able to read the sensor value on AI0 and AI8 in differential mode. - As per page 6 of the user guide.

Initially i would like to read the value using MAX, but i am struggling to setup MAX to read the sensor.

I open max, find the 6259 card, open test panel, but then i can't see anything that looks like AI0 / AI8 differential mode.

Will the value be in degrees C, or will it be a number that requires scaling?

Many thanks,

Oliver.

[TrottM]

Hey Oliver

The value read would be a voltage so would need scaling. The temp sensor in the SCB 68 is used to calculated the CJC of a connected temperature sensor. Below is a useful link on how to do this.

http://digital.ni.com/public.nsf/websearch/7F2EA1FE43537A0E8625652200522718

I see no reason why you couldnt read the voltage read from the daqmx task as described in the link.